Sweating a lot and itchy face may be due to salt irritation of sweat, skin allergy to sweat, suffering from eczema, cholestatic urticaria, and skin barrier damage. 1. Salt is present in sweat, and when you sweat a lot, the salt in it can irritate the hair follicles on your face and make you feel itchy. 2. Itching can also occur when substances in sweat cause skin allergies on the face. 3. When you suffer from facial eczema, you may feel itchy, and when you sweat a lot, the symptoms will become more obvious. 4. Increased sweating caused by exercise can raise the temperature of the local center of the skin on the face, triggering cholinergic nerve impulses, resulting in cholinergic urticaria, with an itchy sensation. 5. If the skin barrier of the face is damaged due to various physical and chemical stimuli (improper choice of cosmetics, sunburn), the skin barrier is damaged, and the sweat stimulates the skin when sweating, which can also lead to itching. Sweating face itchy severe recommended to actively seek medical attention to clarify the cause of the disease, in accordance with the doctor’s instructions for targeted treatment.